Metz MECABLITZ 36 AF-4 Canon Owner's manual

Category
Camera flashes
Type
Owner's manual
MECABLITZ 36 AF-3 C/M/N
MECABLITZ 36 AF-4 C
Bedienungsanleitung
Mode d’emploi
Handleiding
Operating Instructions
Norme per l’uso
Instrucciones del manejo
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Foreword
Welcome to the large family of Metz customers! We con-
gratulate you on purchasing this flash unit and thank you
for your confidence in our products.
It is only natural that you should want to use your flash unit
straight away. However, we recommend that you study the-
se Operating Instructions beforehand to be able to fully
exploit and utilize all the capabilities offered.
This flash unit is only suitable for the following camera brands:
• mecablitz 36 AF-3 C only for Canon EOS cameras
• mecablitz 36 AF-4 C only for Canon EOS/Power shot
cameras
• mecablitz 36 AF-3 M only for Minolta Dynax or. Minolta
Maxxum cameras
• mecablitz 36 AF-3 N only for Nikon cameras.
Contents
1. Safety instructions . . . . . . . . . . . . . . . . . . . . . . 70
2. Supported dedicated functions . . . . . . . . . . . . . 71
2.1 mecablitz 36 AF-3 C . . . . . . . . . . . . . . . . . . . . 71
2.2 mecablitz 36 AF-4 C . . . . . . . . . . . . . . . . . . . . 72
2.3 mecablitz 36 AF-3 M . . . . . . . . . . . . . . . . . . . . 72
2.4 mecablitz 36 AF-3 N . . . . . . . . . . . . . . . . . . . . 73
3. Mounting the mecablitz . . . . . . . . . . . . . . . . . . 73
3.1 Mounting the mecablitz on the camera. . . . . . . . 73
3.2 Removing the mecablitz from the camera . . . . . . 74
4. Power supply. . . . . . . . . . . . . . . . . . . . . . . . . . 74
4.1 Suitable batteries . . . . . . . . . . . . . . . . . . . . . . . 74
4.2 Replacing batteries . . . . . . . . . . . . . . . . . . . . . . 75
4.3 Switching the flash unit on and off . . . . . . . . . . . 75
5. Dedicated functions and flash mode . . . . . . . . . 76
5.1 Flash readiness indication . . . . . . . . . . . . . . . . . 76
5.2 Automatic flash sync speed control. . . . . . . . . . . 76
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5.3 Correct exposure indication. . . . . . . . . . . . . . . . 77
5.4 Displays in the camera viewfinder . . . . . . . . . . . 77
5.4.1 mecablitz 36 AF-3 C . . . . . . . . . . . . . . . . . . . . 78
5.4.2 mecablitz 36 AF-3 M . . . . . . . . . . . . . . . . . . . . 78
5.4.3 mecablitz 36 AF-3 N . . . . . . . . . . . . . . . . . . . . 78
5.5 Zoom reflector . . . . . . . . . . . . . . . . . . . . . . . . . 79
5.6 AF measuring beam . . . . . . . . . . . . . . . . . . . . . 79
5.7 TTL flash mode . . . . . . . . . . . . . . . . . . . . . . . . . 80
5.7.1 Automatic TTL fill-in flash in daylight . . . . . . . . . 81
5.7.2 Canon E-TTL flash mode . . . . . . . . . . . . . . . . . . 81
5.7.3 Matrix-controlled fill-in flash (Nikon) . . . . . . . . . 82
5.7.4 Manual TTL flash exposure correction. . . . . . . . . 83
5.8 Establishing the maximum flash range with
the aperture calculator . . . . . . . . . . . . . . . . . . . 83
6. Programmed Auto Flash Mode . . . . . . . . . . . . . 84
7. Flash techniques . . . . . . . . . . . . . . . . . . . . . . . 85
7.1 Bounce flash. . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7.2 Flash synchronisation . . . . . . . . . . . . . . . . . . . . 86
7.2.1 Normal synchronisation . . . . . . . . . . . . . . . . . . 86
7.2.2 REAR - Second-curtain synchronisation . . . . . . . 86
7.2.3 Slow synchronisation / SLOW. . . . . . . . . . . . . . 86
8. Maintenance and care . . . . . . . . . . . . . . . . . . . 87
9. Technical data . . . . . . . . . . . . . . . . . . . . . . . . . 88
9.1 Guide number table for full light output,
metric system . . . . . . . . . . . . . . . . . . . . . . . . . 136
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1. Safety instructions
The flash unit is exclusively intended and approved for
photographic use!
Never fire a flash in the vicinity of flammable gases or
liquids (petrol, solvents, etc.)! DANGER OF EXPLOSION!
Never take flash shots of car, bus or train drivers, or of
motorcycle and bicycle riders, whilst they are travelling.
They could be blinded by the light and cause an accident!
Never fire a flash in the immediate vicinity of the eyes!
Flash fired directly in front of the eyes of a person or ani-
mal can damage the retina and lead to severe visual
disorders - even blindness!
Only use the approved power sources listed in the
Operating Instructions!
Do not expose batteries to excessive heat, sunshine, fire
and the like!
Never throw exhausted batteries on to a fire!
Exhausted batteries should be immediately removed from
the flash unit. Lye leaking out of spent batteries will dam-
age the unit.
Never recharge dry-cell batteries!
Do not expose the flash unit or battery charger to drip-
ping or splashing water (such as rain)!
Protect the flash unit from excessive heat and humidity!
Do not store the flash unit in the glove compartment of a
car!
Never place material that is impervious to light in front of,
or directly on, the reflector screen. The reflector screen
must be perfectly clean when a flash is fired. The high
energy of the flash light will burn the material or damage
the reflector screen if this is not observed.
Do not touch the reflector screen after a series of flash
shots. Danger of burns!
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Never disassemble the flashgun! DANGER: HIGH VOLT-
AGE! There are no components inside the flashgun that
can be repaired by a layman.
When taking a series of flash shots at full light output and
fast recycling times as provided by NiCad battery opera-
tion, make sure to observe an interval of at least 10 mi-
nutes after 15 flashes, otherwise the flash unit will be
overloaded.
The mecablitz may only be used in combination with a
camera-integrated flash unit if the latter can completely
be folded out!
Quick changes in temperature may cause condensation.
Therefore give the flashgun time to acclimatize!
2. Supported dedicated functions
2.1 mecablitz 36 AF-3 C
• Flash ready indication in camera viewfinder
• Automatic flash sync speed
• TTL flash control
Manual TTL-flash exposure correction
x AF measuring beam control
• Programmed auto flash mode
= Dedicated function is performed by the camera or must be
set on the camera.
x = Some cameras only support the AF illuminator integrated
in the camera.
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2.2 mecablitz 36 AF-4 C
• Flash ready indication in camera viewfinder
• Automatic flash sync speed
• TTL flash control
• E-TTL flash control
Manual TTL-flash exposure correction
Flash exposure storage FE
x AF measuring beam control
• Programmed auto flash mode
= Dedicated function is performed by the camera or must be
set on the camera.
x = Some cameras only support the AF illuminator integrated
in the camera.
2.3 mecablitz 36 AF-3 M
• Flash ready indication in camera viewfinder
> Automatic flash sync speed
• TTL flash control
• Automatic TTL flash exposure correction
Manual TTL-flash exposure correction
• AF measuring beam control
• Programmed auto flash mode
1st or 2nd curtain synchronisation
= Dedicated function is performed by the camera or must be
set on the camera.
x = Some cameras only support the AF illuminator integrated
in the camera.
> =
Only in the camera modes A, S and M
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2.4 mecablitz 36 AF-3 N
• Flash ready indication in camera viewfinder
• Automatic flash sync speed
• TTL flash control
• Automatic TTL flash exposure correction
Manual TTL-flash exposure correction
Matrix controlled TTL fill-in flash mode
• AF measuring beam control
• Programmed auto flash mode
1st or 2nd curtain synchronisation
= Dedicated function is performed by the camera or must be
set on the camera.
x = Some cameras only support the AF illuminator integrated
in the camera.
3. Mounting the mecablitz
3.1 Mounting the mecablitz on the camera
Turn off the camera and the mecablitz by their main
switch.
mecablitz 36 AF-3 C/4 C and 36 AF-3 N
Turn the knurled nut against the mecablitz housing until
the stop point is reached.
Slide the mecablitz foot completely into the camera’s
accessory shoe.
Turn the knurled nut against the camera body as far as
possible, thereby clamping the mecablitz.
mecablitz 36 AF-3 M
Slide the mecablitz foot completely into the camera’s
accessory shoe.
Lightly press the unlatching button “PUSH” upward to
clamp the mecablitz in the camera’s accessory shoe.
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3.2 Removing the mecablitz from the camera
Turn off the camera and the mecablitz by their main
switch.
mecablitz 36 AF-3 C/4 C and 36 AF-3 N
Turn the knurled nut against the mecablitz housing until
the stop point is reached.
Withdraw the mecablitz from the camera’s accessory
shoe.
mecablitz 36 AF-3 M
Press the unlatching button “PUSH” towards the flash unit
and at the same time hold it lightly down until the “PUSH”
button locks in place.
Withdraw the mecablitz from the camera’s accessory
shoe.
4. Power supply
4.1 Suitable batteries
The mecablitz can be operated with any of the following
batteries:
• 4 NiCad batteries, type IEC KR 15/51. They permit very
fast recycling and are economical in use because they are
rechargeable.
• 4 nickel metal hydride batteries. They have a significantly
higher capacity than NiCad batteries and are less harm-
ful to the environment (no cadmium).
• 4 alkaline manganese dry-cell batteries, type IEC LR6.
Maintenance-free power source for moderate power re-
quirements.
Do not use lithium batteries! Their higher cell voltage
may damage the electronic system of the flash unit.
Remove the batteries from the mecablitz if the flash unit is
not going to be used for an extended period of time.
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4.2 Replacing batteries
The batteries are exhausted if the recycling time (elapsing
from the triggering of a full-power flash to the moment the
flash ready indicator lights up again) exceeds 60 seconds.
• Turn off the mecablitz by its main switch.
• Slide the battery compartment cover in the direction of the
arrow and fold open.
• Insert the batteries lengthwise in conformity with the indi-
cated battery symbols and close the battery compartment
cover.
When loading batteries ensure correct polarity, as
indicated by the symbols in the battery compartment.
Mixed up battery poles may destroy the flash unit!
Replace all batteries at a time and make sure that the
batteries are of the same brand and type and have
the same capacity!
Exhausted batteries must not be thrown in the dustbin!
Help protect the environment and dispose of run-down
batteries at the appropriate collecting points.
4.3 Switching the flash unit on and off
The flash unit is switched on by its main switch. In the right
“ON” position, the mecablitz is on. To turn off the flash unit
reset the main switch to its “OFF” position.
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5. Dedicated functions and flash mode
5.1 Flash readiness indication
The flash readiness symbol lights up on the mecablitz
when the flash capacitor is charged, thereby indicating that
flashes can be fired for the next shot. Flash readiness is
transmitted to the camera and displayed in the viewfinder
(see camera manual).
If a picture is shot before flash readiness is signalled in the
camera’s viewfinder, then the flash unit will not be triggered
so that the exposure may be incorrect.
If flash readiness is established, a full-power test flash
can be triggered with the manual firing button on the
mecablitz.
5.2 Automatic flash sync speed control
Depending on the camera model and the selected mode,
the camera’s shutter speed automatically changes to flash
sync speed when flash readiness is reached (see operating
instructions for the given camera).
Shutter speeds faster than the flash sync speed cannot be
set or will automatically be changed to flash sync speed.
Various cameras feature a sync speed range, e.g. 1/30th
sec. to 1/125th sec. (see the camera’s operating instruc-
tions). The actual sync speed used by the camera depends
on the camera mode, the prevailing ambient light and the
focal length of the lens.
Shutter speeds that are slower than the flash sync speed can
be used, depending on the operating mode selected on the
camera.
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Only mecablitz 36 AF-3 M:
When the flash unit is switched on with bright ambient light,
ensure that in the Program P and Programmed Image
Control Modes the shutter speed is not faster than the flash
sync speed. In the event that the camera selects a faster
speed, this can be limited to the flash sync speed by pres-
sing the key for exposure control on the camera. An alter-
native way to overcome the problem is to set the “A”, “S” or
“M” mode on the camera.
5.3 Correct exposure indication
The “o.k.” correct exposure confirmation briefly lights up on
the mecablitz when the shot was correctly exposed in TTL
flash mode.
If “o.k.” is not indicated after an exposure, then this means
that the shot was underexposed. The shot will then have to
be repeated with the next smaller f-number (e.g. f/8 instead
of f/11) or the distance to the subject or the reflecting sur-
face (e.g. when bouncing the flash) must be shortened.
Please refer to the maximum flash range indicated on the
aperture calculator of the mecablitz 36AF-3C/M/N.
Only mecablitz 36 AF-3 M:
Following correct exposure the mecablitz transmits a signal
to the camera with the result that correct exposure is addi-
tionally indicated in the viewfinder of some cameras (see
operating instructions for the given camera).
5.4 Displays in the camera viewfinder
The actual display in the camera viewfinder can devia-
te from the subsequent description or some symbols
are only possible with certain camera models (see
operating instructions for the given camera).
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5.4.1 mecablitz 36 AF-3 C/4 C
• Flash symbol flashes:
User is requested to use or switch on the flash unit.
• Flash symbol lights up: mecablitz is ready for operation.
Some cameras have a warning function in the viewfinder to
indicate incorrect exposure. For instance, if the f-number or
shutter speed or both of them flash in the viewfinder, then
this will indicate either under- or overexposure.
Basic infor
mation concerning incorrect exposure:
• In the event of overexposure: Do not use the flash!
• In the event of underexposure: Switch on the flash unit or
mount the camera on a tripod and set a slower shutter
speed.
The reasons for incorrect exposure can vary in the different
exposure and automatic programmes.
5.4.2 mecablitz 36 AF-3 M
• Flash symbol lights up (Flash readiness indication):
Display is permanently illuminated or flashes slowly to
indicate that the mecablitz is ready for firing. A flash will
be fired when the camera’s shutter is released.
• Flash symbol flashes (Correct exposure indication):
Display flashes rapidly after shooting to confirm correct
exposure.
• Display flashes:
Flash is required for the existing exposure situation.
5.4.3 mecablitz 36 AF-3 N
• Green flash symbol illuminated:
User is requested to use or switch on the flash unit.
• Red flash symbol illuminated:
Flash unit is ready for firing.
• Red flash symbol remains illuminated after shooting or
is briefly switched off:
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The shot was correctly exposed.
5.5 Zoom reflector
The zoom reflector of the mecablitz has four zoom positions
for optimal light coverage and adaptation of the guide
number to the focal length of the lens.
28 mm Wide-angle illumination for focal lengths
as of 28 mm
35 mm Wide-angle illumination for focal lengths
as of 35 mm
50 mm Normal illumination for focal lengths as of 50 mm
85 mm Telelens illumination for focal lengths as of 85 mm
The zoom reflector can be swivelled upwards into four lock-
ing positions (e.g. for bounce flashes):
30°, 45°, 60° and 90°.
For normal flash operation the reflector is in the horizontal
position: 0°.
5.6 AF measuring beam
The AF measuring beam is activated by the camera electro-
nics when the ambient lighting conditions are insufficient for
automatic focusing. The AF beam emitter then projects a
striped pattern on to the subject, and the camera uses this
pattern to focus automatically.
To enable activation of the AF measuring beam by
the camera, the camera lens must be set to AF. On
the camera, the AF mode “Single-AF” or “ONE-SHOT-
AF” must be selected. Low-speed zoom lenses may
significantly reduce the distance range of the AF mea-
suring beam.
The striped pattern of the AF measuring beam only supports
the camera’s central AF sensor. When using cameras with
several AF metering areas we therefore recommend to acti-
vate the camera’s central AF metering zone.
Some cameras may only activate the AF illuminator inte-
grated in the camera. In such an event, the AF measuring
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beam emitter of the mecablitz will not be activated.
Please refer to the corresponding information given in
operating instructions for the individual camera.
5.7 TTL flash mode
The mecablitz 36AF-3 is only suitable for the TTL flash
mode.
The TTL flash mode is a very simple way to achieve excellent
flash shots. In this mode exposure readings are taken by a
sensor built into the camera which measures the light reach-
ing the film through the camera lens (TTL). The electronic
control circuit within the camera transmits a stop signal to
the mecablitz as soon as the film has been exposed by the
correct amount of light, thereby instantly interrupting the
flash. The advantage of this flash mode is that all factors in-
fluencing correct exposure of the film (filters, change of
aperture and focal length with zoom lenses, extensions for
close-ups, etc.) are automatically taken into account. You
need not worry about setting the flash, the camera’s elec-
tronic system automatically determines the correct amount
of flash light required.
If flash exposure was correct, the “o.k.” exposure confirma-
tion lights up.
The TTL flash mode is supported by all camera modes (e.g.
Full Auto Mode, Program P, Aperture Priority Mode “Av” or
“A”, Shutter Priority Mode “Tv” or “S”, Programmed Image
Control Modes, Manual Mode “M”, etc.).
To test the TTL function a film must be loaded in the
camera. When selecting the film please check whet-
her limits regarding maximum film speed are appli-
cable to the given camera when in TTL mode (refer to
the camera’s operating instructions). The mecablitz
supports the TTL flash mode for film speeds from
ISO 25 to ISO 800.
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5.7.1 Automatic TTL fill-in flash in daylight
Most camera models automatically activate the fill-in flash
mode when in Full Auto Mode, Program P, and the
Programmed Image Control Modes in daylight (see the
camera’s operating instructions).
Fill-in flash overcomes troublesome dense shadows and
produces a more balanced exposure between subject and
background with contre-jour shots. The camera’s computer-
controlled metering system sets the most suitable combina-
tion of shutter speed, working aperture and flash output.
Ensure that the contre-jour light source does not shine
directly into the lens as this will mislead the camera’s
TTL metering system!
In this instance there is no setting or display on the meca-
blitz for automatic TTL fill-in flash.
5.7.2 Canon E-TTL flash mode
With mecablitz 34 AF-4 C only
The E-TTL flash mode is an advanced variant of the “normal”
TTL flash mode. Prior to shooting, the reflection of the subject
is measured by way of a preflash. The camera evaluates the
reflected preflash light so that the subsequent flash exposure is
optimally adapted to the prevailing photographic situation
(see operating instructions of your camera). The measuring
preflash does not contribute to the exposure.
Settings and displays
• Switch on the flash unit and the camera.
• Lightly touch the camera’s shutter release for data exchan-
ge between flash unit and camera.
The E-TTL flash mode is automatically activated when the camera
supports this mode. E-TTL then lights up on the flash unit.
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FE flash exposure storage
Some Canon cameras offer the possibility of FE flash expo-
sure storage. This is supported by the flash unit in the E-TTL
flash mode.
FE flash exposure storage in E-TTL mode permits the amount
of light required for the subsequent shot to be determined
and stored prior to exposure. This can be expedient when
flash exposure has to be adapted to specific details that
may not necessarily be identical with the main subject.
Focus the camera’s AF sensor metering area on the zone
whose flash exposure is to be predetermined. When the FE
button on the camera is actuated (the designation may vary
with individual camera models - see camera’s operating
instructions) the flash unit will fire an FE test flash. The elec-
tronic measuring circuit inside the camera assesses the
reflected light of the FE test flash to determine the light output
required for the subsequent exposure. The main subject can
thereafter be focused with the AF sensor metering area of
the camera. When the shutter release is pressed the picture
will be exposed with the previously determined light output.
Due to system-inherent reasons any changes in the light
situation after the FE test flash has been fired will not be
taken into account when the picture is shot.
Some cameras do not support FE flash exposure storage in
the “green” full auto mode or programmed image control
modes (see camera’s operating instructions).
5.7.3 Matrix-controlled fill-in flash (Nikon)
Only with mecablitz 36 AF-3 N
In this flash mode the subject and the background lighting
are automatically balanced without overexposing the sub-
ject. The camera establishes the exposure setting for the
ambient light by matrix metering.
This operating mode is either set on the camera or automa-
tically activated by the camera (see operating instructions
for the given camera).
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5.7.4 Manual TTL flash exposure correction
The TTL auto flash mode of most cameras is matched to a 25
% degree of light reflection by the subject (average amount of
light reflected by flash-shot subjects). Consequently, a dark
background that absorbs a great deal of light, or a bright
background that reflects a great deal of light, can result in
under- or overexposure, respectively.
To offset this effect a correction value can be set on some
cameras to manually match the TTL flash exposure to the
photographic situation. The actual extent of correction
depends on the contrast prevailing between subject and
background. The correction value is set on the camera.
Please refer to the camera’s operating instructions for details
concerning the settings.
A dark subject in front of a bright background:
Positive correction value (approx. 1 to 2 EV). Light
subject in front of a dark background: Negative cor-
rection value (approx. -1 to -2 EV).
Exposure correction by changing the lens diaphragm is not
possible because the camera’s automatic exposure system
will automatically regard the changed diaphragm as the
normal working aperture.
After the exposure do not forget to reset the TTL flash
exposure correction back to the normal value on the
camera!
5.8 Establishing the maximum flash range with the
aperture calculator
Only possible on flash units with aperture calculator.
The maximum flash range of the mecablitz can be estab-
lished by way of the aperture calculator in the control
panel.
• Set the “ISO” upper slide at the ISO speed of the film
loaded in the camera.
• Set the lower slide at the selected zoom position of the
reflector (28 mm, 35 mm, 50 mm or 85 mm).
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• Select in the “F” line of the aperture calculator the f-stop
set on the camera/lens.
• The maximum flash range of the mecablitz in meters (m)
and feet (ft) is indicated underneath the f-stop.
A minimum distance to the subject should be maintained to
avoid overexposure. The minimum distance is approximate-
ly 10 per cent of the maximum flash range.
Ideally, the subject should be located in the middle third of
the distance between minimum distance and maximum flash
range to give the electronic circuit sufficient leeway for light
control.
Example:
Settings: ISO 100, 50 mm, f/4
• The aperture calculator will indicate a maximum flash
range of approx. 7.3 m.
• The minimum distance to the subject is therefore approx.
0.7 m.
• Ideally, the subject should be at a distance of
between 2.9 m and 5.1 m.
6. Programmed Auto Flash Mode
In the programmed auto flash mode the camera automati-
cally controls the aperture, the shutter speed, and the meca-
blitz for optimal results in most photographic situations,
including fill-in flash.
Settings on the camera
Set your camera to Full Auto Mode, Program P or a
Programmed Image Control Mode (landscape, portraiture,
sport, etc.). Select the auto-focus mode on the camera.
Settings on the flash unit
Adjust the zoom position of the reflector to the focal length
of the lens or set the reflector straightaway to “28 mm”.
Having completed the above settings, you can commence
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flash photography as soon as the mecablitz indicates flash
readiness.
7. Flash techniques
7.1 Bounce flash
Photos shot with full frontal flash are easily recognized by
their harsh, dense shadows. This is often associated with a
sharp drop in light from the foreground to the background.
This phenomenon can be avoided with bounce flash becau-
se the diffused light will produce a soft and uniform rendi-
tion of both the subject and the background. For this situa-
tion the reflector is turned in such a manner that the flash is
bounced off a suitable reflective surface (e.g. ceiling or wall
of the room).
The reflector can be turned vertically up to 90°.
When turning the reflector vertically, it is essential to ensure
that it is moved by a sufficiently wide angle so that direct
light can no longer fall on the subject. Consequently, always
turn the reflector at least to the 60° lock-in position.
The light bounced off the reflecting surfaces produces a soft
and uniform illumination of the subject. The reflecting surfa-
ce must be white or have a neutral colour, and it must not
be structured, e.g. wooden beams in a ceiling as these
might cause shadows. For colour effects just select the
reflective surface in the desired colour.
Take into account that the maximum flash range is
considerably diminished when bouncing the flash.
The following rule of thumb will help you determine
the maximum flash range for a room of normal
height:
guide number
Maximum flash range = –––––––––––––––––––––––––
(flash-to-subject distance x 2)
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7.2 Flash synchronisation
7.2.1 Normal synchronisation
In normal synchronisation the mecablitz is triggered at the
beginning of the exposure time (1st curtain synchronisa-
tion). Normal synchronisation is the standard mode on all
cameras, and is suitable for most flash shots. Depending
upon the given mode, the camera is changed over to flash
sync speed, the customary one being between 1/30th sec.
and 1/125th sec. (see the camera’s operating instructions).
No settings have to be made on the mecablitz, nor is there
any display for this mode.
7.2.2 REAR - Second-curtain synchronisation
Some cameras offer the facility of second-curtain synchroni-
sation (REAR mode) triggering the mecablitz by the end of
the exposure time. Second-curtain synchronisation is parti-
cularly advantageous when using slow shutter speeds (slo-
wer than 1/30 sec.) or when shooting moving objects that
have their own source of light. Second-curtain synchronisa-
tion gives a more realistic impression of movement because
the light streaks behind the light source instead of building
up in front of it, as is the case when the flash is synchroni-
sed with the 1st shutter curtain! Depending on its operating
mode, the camera uses shutter speeds slower than its sync
speed.
The REAR function is only possible with cameras fea-
turing this facility. The corresponding setting is made
on the camera (see operating instructions of the given
camera).
7.2.3 Slow synchronisation / SLOW
In certain operating modes, some cameras permit slow flash
synchronisation (SLOW) which will provide added promi-
nence to the background at lower ambient light levels. This
is achieved by matching the shutter speed to the ambient
light. Accordingly, shutter speeds slower than the flash sync
speed are automatically adjusted by the camera. Some
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Metz MECABLITZ 36 AF-4 Canon Owner's manual

Category
Camera flashes
Type
Owner's manual

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